Five-Membered Ring Systems: Pyrroles and Benzo Analogs

Lopchuk, Justin M.

doi:10.1016/b978-0-12-819962-6.00006-3

Cited by 8 publications

(11 citation statements)

References 251 publications

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“…V is the volume of gas mixture passing through the reactor cross section in a unit of time, m 3 /sec. Considering that the pressure along the length of the reactor remains virtually unchanged, we can write down (7) based on ( 5) and ( 7) we obtain • (8)…”

Section: It Follows From Equation (4) Thatmentioning

confidence: 99%

“…The present-day level of development of innovative technologies promotes research in the field of chemistry of heterocyclic compounds [1][2][3]. Condensation of acetylene with ammonia and amines is of great theoretical and practical interest, which opens a perspective for the synthesis of complex organic nitrogen-containing compounds of pyrrole and its derivatives, which are currently of practical importance [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…The pyrrole ring is contained in the molecules of blood -hemoglobin and green substances of plantschlorophyll, a number of antibiotics, and in many compounds [6,7]. The pyrrole fragments contained are potentially important as optical electron-active materials [7]. Plasma copolymers of polypyrrole and polyethylene glycol are used to produce an implant that promotes neuroprotection and the restoration of a compound in the spinal cord after damage [8].…”

Section: Introductionmentioning

confidence: 99%

“…In order to select optimal process and reactor parameters, we have conducted a series of experiments with different reactor designs. The reactor design must ensure that the following basic process parameters are maintained [20][21][22]: [1] reaction period; [2] temperature: at various points of the reaction zone; [3] reactor pressure; [4] mass transfer rate to the active surface of the catalyst and between phases; [5] catalyst activity. Heterocyclization reaction was carried out in tubular reactors of size • .…”

Section: Introductionmentioning

confidence: 99%

“…The reactor design must ensure the maintenance of the following basic process parameters: [1] reaction time; [2] temperatures at various points of the reaction zone; [3] reactor pressure; [4] mass transfer rate to the active surface of the catalyst and between phases; [5] catalyst activity. For acetylene and ammonia catalytic reactions we proposed a catalyst layer.…”

Section: Introductionmentioning

confidence: 99%

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Calculation and Design of an Industrial Reactor for Pyrroles Synthesis

Shokirov¹,

Turabdjanov²,

Kadirov³

et al. 2021

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Industry of pyrroles synthesis on the basis of acetylene, ammonia and amines over polyfunctional catalyst can be organised only when for its recovery the rational industrial technology allowing to synthesize this product in necessary quantity and demanded quality cheap enough from accessible raw materials is developed. Considering the issues related to the development of a new reactor with high productivity and economic efficiency, the processes running in the reactor were studied. Phase characteristics have been investigated in response to changes in acetylene conversion rate due to the height of the catalyst layer. As a result, high productivity of acetylene production with zinc-chromaluminum catalyst at the temperature range of 340-440оС is achieved for 92% when the layer height is 1200 mm from the reactor top point. Based on the mass balance as well as the experimental result, a reactor for the industrial synthesis of pyrroles has been proposed.

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Section: It Follows From Equation (4) Thatmentioning

confidence: 99%